The gestation woman change as a result of hormone level, and increscent uterus is oppressive and cystic, ureter makes uric road not the reason such as free, easy happening uric road infection.

• 妊娠期妇女由于激素水平的变化，以及增大的子宫压迫膀胱，输尿管使尿路不畅等原因，易发生尿路感染。